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Stock-Based Compensation Plans - Summary of RSU Transactions (Details) (USD $)
9 Months Ended
Dec. 10, 2012
May 12, 2013
Restricted Stock Units (RSUs)
Number of units    
Non-vested at September 2, 2012 9,676,000 9,260,000
Granted   4,192,000
Vested and delivered   (3,842,000)
Forfeited   (173,000)
Special cash dividend   732,000
Not vested at May 12, 2013 9,676,000 10,169,000
Weighted average grant date fair value    
Non-vested at September 2, 2012   $ 66.14
Granted   $ 90.99
Vested and delivered   $ 67.15
Forfeited   $ 76.47
Not vested at May 12, 2013   $ 73.40